Blends of styrene butadiene styrene TRI block copolymer/polyaniline-Characterization by WAXS

Souza, Fernando Gomes de; Soares, Bluma G.; Mantovani, Gerson L.; Manjunath, Amit K.; Somashekarappa, H.; Somashekar, R.; Siddaramaiah,

doi:10.1016/j.polymer.2006.01.033

Cited by 42 publications

(37 citation statements)

References 39 publications

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“…The role of the secondary dopant is to diminish the polarization and to remove possible structural defects by creating a strong interaction with the PAni backbones and/or the primary dopant. [10,11] As a consequence, as demonstrated in previous works, [12][13][14] the conductivity of PAni can be increased due to the development of more ordered structures and, consequently, enhanced charge mobility.…”

Section: Introductionmentioning

confidence: 65%

New in situ Blends of Polyaniline and Cardanol Bio‐Resins

Souza

Richa

Siervo

et al. 2008

Macro Materials & Eng

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Cardanol, a well known natural resource, was used to produce a polymer resin in the presence of formaldehyde, catalyzed by H2SO4. Before reticulation, PAni · H2SO4 was blended with the resin. The blended material was cast into poly(propylene) cups and kept inside a desiccator under vacuum until complete water evaporation. The final in situ polymer blend was solid and could not be dissolved in ordinary solvents, indicating that a reticulated material had been obtained. Samples prepared similarly were then characterized, showing that the produced blends can be used as pressure sensing materials.magnified image

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Section: Introductionmentioning

confidence: 65%

New in situ Blends of Polyaniline and Cardanol Bio‐Resins

Souza

Richa

Siervo

et al. 2008

Macro Materials & Eng

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“…After modification with PAni Á H 2 SO 4 , electrical conductivity increases 2 500 times, reaching (1.01 AE 0.01) Â 10 À4 S Á cm À1 . Although these may be regarded as low conductivity values, [35][36][37][38][39][40][41][42][43][44] modified fibers can be used for manufacture of electronic devices that are fed by 9 V batteries, as usually employed when safe human applications are pursued, including applications in the automobile industry. [35,36] (It is worthy mentioning that less than 2 wt.-% of PAni was used to prepare the modified curauá fibers.…”

Section: Resultsmentioning

confidence: 99%

Natural Brazilian Amazonic (Curauá) Fibers Modified with Polyaniline Nanoparticles

Souza

Oliveira

Rodrigues

et al. 2009

Macro Materials & Eng

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The surface of natural Brazilian amazonic fibers (curauá, Ananas erectifolius) was modified with polyaniline nanoparticles, through in situ preparation of polyaniline nanoparticles in presence of the curauá fibers. This allowed for a significant increase in the electrical conductivity of the fibers (≈2 500 times). As the electrical resistivity of the modified fibers is a function of the applied external pressure, the produced composites can be used as a cheap pressure‐sensing material. The modified materials were also characterized by FT‐IR, XPS and SAXS, and the obtained results were used to explain some of the observed characteristics of the materials.magnified image

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“…The images show a combination of well dispersed, isolated PANI particles, and agglomerates, which are typical for composites of ultimately rather incompatible components. 55 Rather interestingly, the images (particularly of the 5% w/w HCl-doped PANI/NR fiber) suggest an inhomogeneous distribution with high local PANI particle/agglomerate densities [ Fig. 6(b), right].…”

Section: Morphologymentioning

confidence: 99%

Electrical conductivity and mechanical properties of polyaniline/natural rubber composite fibers

Sukitpaneenit

Thanpitcha

Sirivat

et al. 2007

J of Applied Polymer Sci

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Electrically conducting elastomer fibers based on natural rubber (NR) and up to 10% w/w polyaniline (PANI) in its emeraldine base (EB) form were fabricated by a wet spinning process. The resulting fibers at various PANI contents were doped by immersion in aqueous HCl solution, which converted the PANI to the electrically conductive emeraldine salt (ES) form. The morphology of the composite fibers was studied by scanning electron microscopy (SEM). PANI particles were inhomogeneously distributed in the NR matrix. The electrical conductivity of the fibers increased with the increasing PANI-ES content and leveled off at a value of around 10 23 S/cm at PANI-ES concentration of 5% w/w. The fibers retained most of their elasticity upon doping, while the tenacity was somewhat reduced. Gratifyingly, the electrical conductivity of the new elastomer fibers was preserved upon elongational deformation, even if strains as large as 600% were applied.

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Blends of styrene butadiene styrene TRI block copolymer/polyaniline-Characterization by WAXS

Cited by 42 publications

References 39 publications

New in situ Blends of Polyaniline and Cardanol Bio‐Resins

New in situ Blends of Polyaniline and Cardanol Bio‐Resins

Natural Brazilian Amazonic (Curauá) Fibers Modified with Polyaniline Nanoparticles

Electrical conductivity and mechanical properties of polyaniline/natural rubber composite fibers

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